JPH021557B2 - - Google Patents

Description

Detailed Description of the Invention (Technical Field) The present invention relates to a contact body and purification device suitable for purifying sewage containing organic matter such as domestic wastewater, and relates to a contact body and purification device that can adjust the flow rate of sewage. Regarding.

(Prior art) A contact aeration type purification device includes a septic tank having an inlet and an outlet for sewage and opening upward, a contact body placed in the septic tank, and a contact body placed at the bottom of the septic tank. There is a device that includes a diffuser pipe and a lid that closes the opening of the septic tank.

However, in conventional valve purification devices, contact materials such as gravel or foamed plastic are simply filled in a predetermined space in the septic tank, so the speed of sewage flowing within the contact material, that is, between the contact materials, is Therefore, after installation, it is impossible to set the flow rate of sewage in the contact body to an optimal value according to the amount of sewage to be treated, the desired degree of purification, etc.

In addition, in this type of purification device, the contact body becomes clogged due to the growth of microorganisms attached to the contact material, but in conventional purification devices, when the clogging occurs, the contact body is removed from the septic tank in order to eliminate the clogging. I had to take it out.

(Object of the Invention) The object of the present invention is to provide a method for use in purification equipment, which is capable of changing the velocity of wastewater flowing inside the contact body and can eliminate clogging of the contact body without taking the contact body out of the septic tank. An object of the present invention is to provide a contact body and a purification device.

(Structure of the Invention) A contact body of the present invention includes a frame having at least one pair of supporting parts extending in the vertical direction, and supported by both said supporting parts rotatably around an axis extending in the horizontal direction, and mutually extending in the vertical direction. A plurality of contact mechanisms comprising a plurality of separated plate-shaped contact members and an angle adjuster that interconnects each contact member and releasably selectively fixes the inclination angle of the contact member with respect to a horizontal plane. including.

The purification device of the present invention includes a septic tank having an inlet and an outlet for sewage and having an opening at the top;
at least one contacting means spaced upwardly from the bottom of the septic tank for contacting the wastewater with purification-like microorganisms; and aeration means disposed between the contacting means and the bottom. means extending vertically within the septic tank and supplying air to the aeration means; and means for closing an opening of the septic tank; a second assembly disposed on a side of the outlet of the first assembly;
a partition member that prevents wastewater above the assembly from flowing above the second assembly, and the first and second assemblies extend in the vertical direction at points facing each other. a frame having at least one pair of support parts; a plurality of plate-shaped contact members rotatably supported by the support parts around an axis extending in the horizontal direction and separated from each other in the vertical direction; a plurality of contact mechanisms having a plurality of mutually connected angle adjusters for selectively fixing the inclination angle of the contact member with respect to a horizontal plane, the aeration means being disposed below the second assembly; .

(Operations and Effects of the Invention) The sewage at the bottom of the septic tank flows from below to the top due to the upward force of the air blown out from the aeration means placed at the bottom of the septic tank, and the sewage at the top flows from above due to its own weight. Flow downward. Moreover, the wastewater in the septic tank comes into contact with the contact body while flowing from the bottom to the top and vice versa. Therefore, the wastewater that flows into the septic tank from the inlet is subjected to the purifying action of anaerobic microorganisms and/or aerobic microorganisms while flowing in the septic tank, and finally flows out of the septic tank from the outlet.

Sewage flowing in the septic tank passes within and between the louver-like contact mechanisms. The flow velocity at this time is regulated by the angle of the plate-shaped contact material with respect to the horizontal plane, and the angle can be changed with an angle adjuster.

The contact member can be rotated angularly by an angle adjuster. Therefore, when clogging occurs between the contact materials due to a film caused by the growth of microorganisms, the contact materials may be rotated angularly multiple times.

According to the present invention, by changing the angle of the contact material with respect to the horizontal plane, the flow rate of sewage inside the contact body can be changed, and therefore, after installation, the flow rate of sewage inside the contact body can be adjusted according to the amount of sewage to be treated and the purpose. The optimum value can be set according to the desired degree of purification.

Moreover, when clogging occurs between the contact materials, the clogging can be eliminated without taking out the contact materials from the septic tank.

Furthermore, if the contact material of the present invention is applied to a contact aeration type purification device that diffuses air from below the contact material, the flow direction of wastewater can be regulated by the contact material, thereby directing the wastewater into the septic tank. can be moved from the top to the bottom and vice versa, making it possible to lengthen the flow path of wastewater in the septic tank.

(Example) The embodiments shown in the drawings will be described below.

Contact aeration type purification device 1 shown in Figures 1 to 3
0 includes a septic tank 12 made of iron, concrete, or synthetic resin. The septic tank 12 has the shape of an elongated box with an opening at the top. In the illustrated example, the entire septic tank 12 is buried underground, but a portion or the entire plate may be exposed above ground.

A sewage inlet 14 is provided on one longitudinal side wall of the septic tank 12, and an outlet 16 is provided on the other side. The inlet 14 and the outlet 16 are
In the illustrated example, it is defined by a pipe that penetrates the side wall of the septic tank. The inlet 14 and the outlet 16 are
Although it is provided in the upper part of the septic tank 12 in the illustrated example, it may be provided in the lower part of the septic tank. In this case, it is desirable to provide a pipe that guides the sewage to the inlet and a pipe that guides the sewage from the outlet to the outside of the septic tank.

A plurality of (four in the illustrated example) contact bodies 18 are sequentially arranged from the inlet to the outlet at height positions spaced apart from the bottom of the septic tank 12 by a predetermined distance. Each contact body 18 is removably mounted on a pair of mold members 20 fixed to the side wall of the septic tank 12, and is in contact with each other. Each contact body 1
8 includes a first assembly 22 disposed on the side of the inlet 14 so that the septic tank 12 can be taken out through the opening;
a second assembly 24 disposed on the side of the outlet 16 of the first assembly 22 such that it can be removed separately from the first assembly 22; and a partition wall 26 that prevents the upper sewage from flowing directly above the second assembly 24.

As shown in FIGS. 4 to 6, each assembly 22, 24 includes a rectangular cylindrical frame 80 extending in the vertical direction;
A plurality of plate-shaped contact members 82 are provided, which extend in the width direction of the septic tank 12 and are rotatably supported on opposing wall portions of the frame 80 around an axis extending in the horizontal direction. Each of the contact members 82 is arranged in a matrix at intervals, and is divided into a plurality of blade groups each consisting of a plurality of contact members arranged in the vertical direction.

Note that each assembly 22, 24 may be further divided into a plurality of parts. Moreover, the frame 80 may be constructed from a long member such as a molded material.

Each contact member 82 has a connecting piece 8 extending in the vertical direction.
4 and 86 at the center in the width direction of the septic tank 12. The connecting pieces 84 interconnect the contact members of the odd-numbered blade groups from the inlet 14 side of the septic tank 12 . On the other hand, the connecting pieces 86 interconnect the contact members of even-numbered blade groups. The upper ends of the connecting pieces 84 are connected to each other by an arm 88 extending horizontally within the septic tank 12.
The upper end of the other arm 9 extends parallel to the arm 88.
They are interconnected by 0.

The arms 88 and 90 each consist of a plurality of separably connected members. The arms 88, 90 have elongated plate members 9 extending upwardly from the arms.
2,94 are connected. Plate members 92, 94
has a plurality of holes, one of which 92 is shown in FIG. In one hole of the plate members 92, 94,
A locking pin 96 is removably inserted to selectively fix the inclination angle of the contact member 82 with respect to the horizontal plane. The locking pin is engaged with a grid 60 or 62, which will be described later.

A pair of wall portions of the frame 80 on which the contact material 82 is supported are reinforced by a plurality of reinforcing plates 98.

As shown in FIG. 4, each contact member 82 is inclined with respect to the horizontal plane, and the inclination direction with respect to the horizontal plane is that of each contact member 82 connected to the connecting piece 84 and each contact member 82 connected to the connecting piece 86. The opposite is true.
The inclination angle of each contact member 82 with respect to the horizontal plane can be set to an arbitrary angle by changing the holes in the plate members 92 and 94 into which the locking pin 96 is inserted.

The upper end of each assembly 22 is located at a height slightly lower than the height of the outlet 16. In contrast, each partition wall 26 extends from the second assembly 24 to a level above the inlet 14 . Each partition wall 26 is
It is fixed to the second assembly 24.

The second assemblies 24 other than the second assembly in the final stage each include a pipe 36, a diffuser pipe 38 that blows out the air supplied from the pipe, and a diffuser pipe 38 that blows out the air supplied from the pipe. A pair of guides 40, 42 leading to the second assembly 24 are arranged. Each pipe 36 extends vertically through the second assembly 24 and is supported by a frame 80. Each diffuser pipe 38 extends in the width direction of the septic tank 12 between the second assembly 24 and the bottom of the septic tank 12, and is fixed to the lower end of the pipe 36. The guide 40 is
An upstream portion of the aeration pipe 38 extends in the width direction of the septic tank 12 and is fixed to the frame 80. On the other hand, the guide 42 extends in the width direction of the septic tank 12 at the downstream side of the aeration pipe 38 and is fixed to the frame 80.

As shown in FIG. 3, each pipe 36 is bent outward in the width direction of the septic tank 12 above the contact body 18, and then bent upward. Each pipe 36
The upper end of is connected to a pipe 46 by a valve mechanism 44. Each valve mechanism 44 includes, as shown in FIG.
8, a union joint 50 connected to the globe valve via nipple 49, and an elbow 52 connected to the union joint via nipple 51 and removably connected to pipe 46.
Each pipe 46 is connected to a common blower (not shown) installed on the ground.

The second assembly 24 of the final stage contact body 18 includes:
An air lift pump 56 is fixed for returning the waste water below the second assembly to the vicinity of the inlet 14 through a return pipe 54. air lift pump 5
6 is supported on the frame 80 of the second assembly 24 of the final stage contact body 18. air lift pump 5
The upper end of the pipe 58 that supplies air to the air diffuser 3
Similarly to the pipe 36 for supplying air to the blower 8, it is connected to a pipe (not shown) connected to the blower by a valve mechanism (not shown). The valve mechanism is
It is separable like the valve mechanism 44 and includes a globe valve, a nipple, a union joint, and an elbow.

The reflux pipe 54 and the air lift pump 56 are separably connected by a pipe joint (not shown). Although not shown, the reflux pipe 54 includes a plurality of pipes corresponding to the first and second assemblies 22 and 24, and each pipe is separably connected by a pipe joint.

At the top of the septic tank 12, there are a plurality of first grates 60, each corresponding to a first assembly 22, and a second grating.
A plurality of second grids 62 are disposed, each individually corresponding to the assembly 24 of the second grid. Each grid 60, 62
is removably supported on a step formed inside the septic tank 12. Each first lattice 60 is
It has approximately the same cross-sectional area as the first assembly 22 of the contact body 18 and is located above the first assembly 22 . In contrast, each second grid 62 has a cross-sectional area approximately the same as the cross-sectional area of the second assembly 24 of the contact body 18 and is positioned above the second assembly 24 .

A closing means 64 for closing the opening of the septic tank 12 is removably mounted on each grid 60, 62. The closure means 64 consists of a first lid 66 individually assigned to the first assembly 22 and a plurality of second lids 68 individually assigned to the second assembly 24 . A first lid 66 is placed on the first grid 60 and a second lid 68 is placed on the second grid 62. Further, the second lid 68 is composed of three lid members arranged in sequence in the width direction of the septic tank 12. Each lid 66, 68 is filled with ±70.

Note that instead of the grid and the lid, a closing mechanism such as a shutter that is moved horizontally to close the opening of the septic tank 12 may be used.

On the ground, as shown in FIG. 2, a pair of rails 72 are laid on both sides of the septic tank 12, extending parallel to the longitudinal direction of the septic tank. A gate-shaped crane 74 is installed on the rail during maintenance and inspection of the purification device 10.
is installed movably.

During operation, the diffuser pipe 38 and the air lift pump 56 are continuously or intermittently supplied with compressed air from the blower.

The air supplied to each diffuser tube 38 is ejected from the diffuser tube as bubbles, rises within the second assembly 24, and imparts upward force to the wastewater within the second assembly.
As a result, the waste water in the second assembly 24 mixes with the air bubbles and is transferred to the second assembly 24 together with the air bubbles.
rise within. Air bubbles ejected from the diffuser tube 38 are guided to the second assembly 24 by guides 40 and 42. Therefore, the sewage in the second assembly 24 is reliably subjected to upward force, and the sewage at the bottom of the septic tank 12 is sucked into the space between the guides 40 and 42, and
Also, the air supplied to the air lift pump 56 rises within the air lift pump 56 and provides an upward force to the sewage within the air lift pump.
As a result, the sewage at the bottom on the side of the outlet 16 is sucked into the air lift pump 56 together with the sediment.
It is returned to the vicinity of the inlet 14 via the pipe 54.

Furthermore, the waste water in the upper part of each contact body 18 is prevented from flowing directly from the upper part of the first assembly 22 to the upper part of the second assembly 24 and vice versa by the partition wall 26. flows downwardly through the second assembly 22 and then upwardly within the second assembly 24;
When passing through the first and second assemblies 22, 24, it comes into contact with the contact material 34, and is subjected to the purifying action of microorganisms adhering to the contact material.

In this way, the wastewater supplied to the inlet 14 is
The step of sequentially passing through the contact body 18 on the inlet 14 side to the contact body 18 on the outlet 16 side in that order, being returned to the vicinity of the inlet 14 by the air lift pump 56, and passing through each contact body 18 in sequence again. After passing through several times, it finally flows out from the outlet 16.

The treated wastewater flowing out from the outlet 16 passes through each contact body multiple times and passes through the contact body 18 at the final stage.
Since the supernatant water has passed through the second assembly 24, it is highly purified. Further, the amount of treated wastewater flowing out from the outlet 16 is the same as the amount of untreated wastewater supplied to the inlet 14.

The velocity of the wastewater flowing through each assembly 22, 24 is determined by the speed of the plate members 92, 94 into which the locking pin 96 is inserted.
An arbitrary angle can be set by changing the hole and changing the inclination angle of each blade 82 with respect to the horizontal plane. When the inclination angle of the contacting bodies 82 with respect to the horizontal plane is small, the interval between horizontally adjacent contacting bodies becomes small, and the velocity of the waste water increases. On the other hand, when the inclination angle of the contacting bodies 82 with respect to the horizontal plane is large, the interval between horizontally adjacent contacting bodies becomes large, and the speed of the waste water becomes slow.

Due to long-term use, microorganisms adhere to the contact material 82 and the microorganisms grow, causing the contact material 82 to grow.
When a film is formed between the two, the contact body 18 becomes clogged with the film. At this time, the plate member 92,
94, each contact member 82 may be angularly rotated multiple times about a horizontal axis. In this way, since the distance between adjacent contact members 82 changes, the film is peeled off and the clogging is eliminated.

When inspecting the purification device 10, the crane 74 removes the lids 60, 62 that close off the area to be inspected. Thereby, the operating contact body of the septic tank 12 can be confirmed. In addition, when repairing the contact body 18, the lid, the grate, and the pipe of the tube 54 disposed above the contact body to be repaired are removed by the crane 74, and then the first or second assembly of the contact body is moved to the crane. Septic tank 12 by 74
Just take it out. The contact body is returned to the septic tank 12.
If you want to store it in a storage room, you can do the opposite of the above. Repair of the air diffuser pipe 38 can be performed in the same manner.

The first and second assemblies 22, 24 are connected to the septic tank 1.
2 and when installing it in the septic tank 12, a rope may be passed through these engaging members 32, and the rope may be hung on the hook of the crane 74. Each lid 66, 68 and each grid 6
0 and 62 are also provided with engagement members similar to the engagement member 32, and the lids 66 and 68 and the grates 60 and 62 can be removed from the septic tank 12 and installed in the septic tank 12 in the same manner as in the first and second assemblies. can be done.

Note that when the second assembly 24 supporting the pipe 36 and the air diffuser 38 is taken out from the septic tank 12, the pipe 36 is separated from the pipe 46 by the valve mechanism 44. When the final stage second assembly 24, carrying the air lift pump 56, is removed from the septic tank 12, the pipe 58 is also separated from the pipe connecting it to the blower.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the purification device of the present invention, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. 4 is an enlarged sectional view showing one embodiment of the contact body, FIG. 5 is a sectional view taken along line 5-5 in FIG. 4, and FIG. FIG. 7 is an enlarged cross-sectional view taken along the line 6-6 in FIG. 5, and is a diagram showing one embodiment of the valve mechanism. 10: purification device, 12: septic tank, 14: inlet, 16: outlet, 18: contact body, 22, 24:
First and second assemblies, 26: partition wall, 38:
Diffusion pipe, 80: Frame, 82: Contact material, 84, 86:
Connection piece, 88, 90: Arm, 92, 94: Plate member, 96: Engagement pin.

Claims (1)

[Scope of Claims] 1. A frame having at least one pair of supporting parts extending in the vertical direction, and a plate-shaped frame that is rotatably supported by both the supporting parts around an axis extending in the horizontal direction and separated from each other in the vertical direction. and a plurality of contact mechanisms comprising a plurality of contact members and an angle adjuster that interconnects each contact member and releasably selectively fixes the inclination angle of the contact member with respect to a horizontal plane. contact body. 2. The angle adjuster is connected to a connecting member that extends in the vertical direction to connect the contact members to each other, and is connected to the upper end of the connecting member, and is attached to the septic tank to selectively fix the height position of the connecting member. The contact body for a purifier according to claim 1, comprising an engaging member to be engaged. 3. A septic tank having an inlet and an outlet for sewage and having an opening at the top, and at least one septic tank located at a position spaced upwardly from the bottom of the septic tank for bringing the sewage into contact with purification-like microorganisms. one contacting means, an aeration means disposed between the contacting means and the bottom, a means extending vertically within the septic tank and supplying air to the aeration means, and an opening of the septic tank. a first assembly disposed on the side of the inlet; and a second assembly disposed on the side of the outlet of the first assembly. , a partition member that prevents wastewater above the first assembly from flowing above the second assembly, the first and second assemblies having upper and lower portions facing each other. a frame having at least one pair of support parts extending in the horizontal direction; a plurality of plate-shaped contact members supported by the support parts rotatably around an axis extending in the horizontal direction and separated from each other in the vertical direction; a plurality of contact mechanisms interconnecting contact members and having an angle adjuster for selectively fixing an inclination angle of the contact members with respect to a horizontal plane, the aeration means being disposed below the second assembly; purification equipment.